(PHP 4 >= 4.1.0, PHP 5, PHP 7)
Converts from a supported calendar to Julian Day Count
int cal_to_jd ( int $calendar, int $month, int $day, int $year )
cal_to_jd() calculates the Julian day count for a date in the specified calendar
. Supported calendar
s are CAL_GREGORIAN
, CAL_JULIAN
, CAL_JEWISH
and CAL_FRENCH
.
Parameters:
calendar
Calendar to convert from, one of CAL_GREGORIAN
, CAL_JULIAN
, CAL_JEWISH
or CAL_FRENCH
.
month
The month as a number, the valid range depends on the calendar
day
The day as a number, the valid range depends on the calendar
year
The year as a number, the valid range depends on the calendar
Returns:
A Julian Day number.
See also:
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